Help!!! Boost-be-gone

Epic404 · 11-07-2014, 08:28 AM

I had a mechanic replace my AC compressor with nothing else wrong with the car. After the repair was complete I left with the car and realized immediately there was no boost and it's slow as dirt. The mechanic was able to get it to through limp-mode with code 30FFH but he's not sure where to go from here. He thinks the computer is telling the wastegates to stay open for some reason.

What might he have done in the process of replacing the AC compressor that would cause the issue?

Epic404 · 11-07-2014, 08:48 AM

Problem solved! The mechanic called a BMW tech who said it's a common problem when the battery and alternator are not hooked up. He said the BMW tech showed him a way to go in the back way to reset it.

jwilliams · 11-07-2014, 01:44 PM

That sounds like rubbish to me Lol. He clearly left a pipe off then realised he had messed up and put your pipe back on.

jayzF30 · 11-09-2014, 10:07 AM

That mechanic screwed up for sure. Main thing is its fixed now.

11-07-2014, 08:28 AM	#1
Epic404 Epic404 23 Rep 260 Posts Drives: 2007 BMW 335I Convertible Join Date: Jun 2010 Location: FL iTrader: (3)	Help!!! Boost-be-gone I had a mechanic replace my AC compressor with nothing else wrong with the car. After the repair was complete I left with the car and realized immediately there was no boost and it's slow as dirt. The mechanic was able to get it to through limp-mode with code 30FFH but he's not sure where to go from here. He thinks the computer is telling the wastegates to stay open for some reason. What might he have done in the process of replacing the AC compressor that would cause the issue?
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11-07-2014, 08:48 AM	#2
Epic404 Epic404 23 Rep 260 Posts Drives: 2007 BMW 335I Convertible Join Date: Jun 2010 Location: FL iTrader: (3)	Problem solved! The mechanic called a BMW tech who said it's a common problem when the battery and alternator are not hooked up. He said the BMW tech showed him a way to go in the back way to reset it.
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11-07-2014, 01:44 PM	#3
jwilliams Lieutenant 146 Rep 563 Posts Drives: 3 series Join Date: Jul 2014 Location: harlow iTrader: (1)	That sounds like rubbish to me Lol. He clearly left a pipe off then realised he had messed up and put your pipe back on.
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11-09-2014, 10:07 AM	#4
jayzF30 Captain 34 Rep 783 Posts Drives: '07 335i, '09 M3 Join Date: Mar 2012 Location: Thornhill iTrader: (0)	That mechanic screwed up for sure. Main thing is its fixed now.
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